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Finding the Fourth Proportional to 369,213.53, 553,820.13 and 88,730.78

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Solution

The fourth proportional to 369,213.53, 553,820.13 and 88,730.78 is: 133,096.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,213.53 : 553,820.13 = 88,730.78 : x
  2. Step 2: Convert to fraction form
    369,213.53/553,820.13 = 88,730.78/x
  3. Step 3: Cross multiply
    369,213.53x = 553,820.13 × 88,730.78
  4. Step 4: Simplify right side
    369,213.53x = 49,140,889,345.50
  5. Step 5: Solve for x
    x = 49,140,889,345.50/369,213.53
  6. Step 6: Final answer
    x = 133,096.12

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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.