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Finding the Fourth Proportional to 272,038.30, 408,057.45 and 72,358.30

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Solution

The fourth proportional to 272,038.30, 408,057.45 and 72,358.30 is: 108,537.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,038.30 : 408,057.45 = 72,358.30 : x
  2. Step 2: Convert to fraction form
    272,038.30/408,057.45 = 72,358.30/x
  3. Step 3: Cross multiply
    272,038.30x = 408,057.45 × 72,358.30
  4. Step 4: Simplify right side
    272,038.30x = 29,526,343,384.34
  5. Step 5: Solve for x
    x = 29,526,343,384.34/272,038.30
  6. Step 6: Final answer
    x = 108,537.45

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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.