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Finding the Fourth Proportional to 292,647.16, 438,631.89 and 134,543.80

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Solution

The fourth proportional to 292,647.16, 438,631.89 and 134,543.80 is: 201,659.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,647.16 : 438,631.89 = 134,543.80 : x
  2. Step 2: Convert to fraction form
    292,647.16/438,631.89 = 134,543.80/x
  3. Step 3: Cross multiply
    292,647.16x = 438,631.89 × 134,543.80
  4. Step 4: Simplify right side
    292,647.16x = 59,015,201,281.78
  5. Step 5: Solve for x
    x = 59,015,201,281.78/292,647.16
  6. Step 6: Final answer
    x = 201,659.91

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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.