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Finding the Fourth Proportional to 369,711.60, 554,565.60 and 144,913.20

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Solution

The fourth proportional to 369,711.60, 554,565.60 and 144,913.20 is: 217,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,711.60 : 554,565.60 = 144,913.20 : x
  2. Step 2: Convert to fraction form
    369,711.60/554,565.60 = 144,913.20/x
  3. Step 3: Cross multiply
    369,711.60x = 554,565.60 × 144,913.20
  4. Step 4: Simplify right side
    369,711.60x = 80,363,875,705.92
  5. Step 5: Solve for x
    x = 80,363,875,705.92/369,711.60
  6. Step 6: Final answer
    x = 217,369.09

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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.