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Finding the Fourth Proportional to 369,099.77, 509,344.67 and 207,988.61

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Solution

The fourth proportional to 369,099.77, 509,344.67 and 207,988.61 is: 287,016.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,099.77 : 509,344.67 = 207,988.61 : x
  2. Step 2: Convert to fraction form
    369,099.77/509,344.67 = 207,988.61/x
  3. Step 3: Cross multiply
    369,099.77x = 509,344.67 × 207,988.61
  4. Step 4: Simplify right side
    369,099.77x = 105,937,887,897.46
  5. Step 5: Solve for x
    x = 105,937,887,897.46/369,099.77
  6. Step 6: Final answer
    x = 287,016.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.