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Finding the Fourth Proportional to 541,547.76, 812,318.88 and 136,740.72

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Solution

The fourth proportional to 541,547.76, 812,318.88 and 136,740.72 is: 205,110.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,547.76 : 812,318.88 = 136,740.72 : x
  2. Step 2: Convert to fraction form
    541,547.76/812,318.88 = 136,740.72/x
  3. Step 3: Cross multiply
    541,547.76x = 812,318.88 × 136,740.72
  4. Step 4: Simplify right side
    541,547.76x = 111,077,068,520.79
  5. Step 5: Solve for x
    x = 111,077,068,520.79/541,547.76
  6. Step 6: Final answer
    x = 205,110.38

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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.