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Finding the Fourth Proportional to 438,088.30, 657,132.45 and 228,136.30

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Solution

The fourth proportional to 438,088.30, 657,132.45 and 228,136.30 is: 342,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,088.30 : 657,132.45 = 228,136.30 : x
  2. Step 2: Convert to fraction form
    438,088.30/657,132.45 = 228,136.30/x
  3. Step 3: Cross multiply
    438,088.30x = 657,132.45 × 228,136.30
  4. Step 4: Simplify right side
    438,088.30x = 149,915,765,752.94
  5. Step 5: Solve for x
    x = 149,915,765,752.94/438,088.30
  6. Step 6: Final answer
    x = 342,204.45

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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.