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Finding the Fourth Proportional to 370,345.79, 555,403.85 and 133,657.72

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Solution

The fourth proportional to 370,345.79, 555,403.85 and 133,657.72 is: 200,445.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,345.79 : 555,403.85 = 133,657.72 : x
  2. Step 2: Convert to fraction form
    370,345.79/555,403.85 = 133,657.72/x
  3. Step 3: Cross multiply
    370,345.79x = 555,403.85 × 133,657.72
  4. Step 4: Simplify right side
    370,345.79x = 74,234,008,824.91
  5. Step 5: Solve for x
    x = 74,234,008,824.91/370,345.79
  6. Step 6: Final answer
    x = 200,445.13

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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.