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Finding the Fourth Proportional to 358,981.90, 538,472.85 and 354,316.30

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Solution

The fourth proportional to 358,981.90, 538,472.85 and 354,316.30 is: 531,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,981.90 : 538,472.85 = 354,316.30 : x
  2. Step 2: Convert to fraction form
    358,981.90/538,472.85 = 354,316.30/x
  3. Step 3: Cross multiply
    358,981.90x = 538,472.85 × 354,316.30
  4. Step 4: Simplify right side
    358,981.90x = 190,789,707,862.46
  5. Step 5: Solve for x
    x = 190,789,707,862.46/358,981.90
  6. Step 6: Final answer
    x = 531,474.45

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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.