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Finding the Fourth Proportional to 316,315.80, 474,230.70 and 158,657.40

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Solution

The fourth proportional to 316,315.80, 474,230.70 and 158,657.40 is: 237,864.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,315.80 : 474,230.70 = 158,657.40 : x
  2. Step 2: Convert to fraction form
    316,315.80/474,230.70 = 158,657.40/x
  3. Step 3: Cross multiply
    316,315.80x = 474,230.70 × 158,657.40
  4. Step 4: Simplify right side
    316,315.80x = 75,240,209,862.18
  5. Step 5: Solve for x
    x = 75,240,209,862.18/316,315.80
  6. Step 6: Final answer
    x = 237,864.22

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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.