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Finding the Fourth Proportional to 371,860.32, 558,009.12 and 147,242.40

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Solution

The fourth proportional to 371,860.32, 558,009.12 and 147,242.40 is: 220,950.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,860.32 : 558,009.12 = 147,242.40 : x
  2. Step 2: Convert to fraction form
    371,860.32/558,009.12 = 147,242.40/x
  3. Step 3: Cross multiply
    371,860.32x = 558,009.12 × 147,242.40
  4. Step 4: Simplify right side
    371,860.32x = 82,162,602,050.69
  5. Step 5: Solve for x
    x = 82,162,602,050.69/371,860.32
  6. Step 6: Final answer
    x = 220,950.17

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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.