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Finding the Fourth Proportional to 357,643.28, 536,710.92 and 147,281.18

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Solution

The fourth proportional to 357,643.28, 536,710.92 and 147,281.18 is: 221,023.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,643.28 : 536,710.92 = 147,281.18 : x
  2. Step 2: Convert to fraction form
    357,643.28/536,710.92 = 147,281.18/x
  3. Step 3: Cross multiply
    357,643.28x = 536,710.92 × 147,281.18
  4. Step 4: Simplify right side
    357,643.28x = 79,047,417,616.49
  5. Step 5: Solve for x
    x = 79,047,417,616.49/357,643.28
  6. Step 6: Final answer
    x = 221,023.08

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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.