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Finding the Fourth Proportional to 528,090.90, 792,136.35 and 243,780.90

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Solution

The fourth proportional to 528,090.90, 792,136.35 and 243,780.90 is: 365,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,090.90 : 792,136.35 = 243,780.90 : x
  2. Step 2: Convert to fraction form
    528,090.90/792,136.35 = 243,780.90/x
  3. Step 3: Cross multiply
    528,090.90x = 792,136.35 × 243,780.90
  4. Step 4: Simplify right side
    528,090.90x = 193,107,712,325.72
  5. Step 5: Solve for x
    x = 193,107,712,325.72/528,090.90
  6. Step 6: Final answer
    x = 365,671.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.