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Finding the Fourth Proportional to 287,020.76, 430,565.70 and 94,901.72

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Solution

The fourth proportional to 287,020.76, 430,565.70 and 94,901.72 is: 142,364.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,020.76 : 430,565.70 = 94,901.72 : x
  2. Step 2: Convert to fraction form
    287,020.76/430,565.70 = 94,901.72/x
  3. Step 3: Cross multiply
    287,020.76x = 430,565.70 × 94,901.72
  4. Step 4: Simplify right side
    287,020.76x = 40,861,425,503.00
  5. Step 5: Solve for x
    x = 40,861,425,503.00/287,020.76
  6. Step 6: Final answer
    x = 142,364.01

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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.