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Finding the Fourth Proportional to 316,316.80, 474,232.20 and 158,658.40

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Solution

The fourth proportional to 316,316.80, 474,232.20 and 158,658.40 is: 237,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,316.80 : 474,232.20 = 158,658.40 : x
  2. Step 2: Convert to fraction form
    316,316.80/474,232.20 = 158,658.40/x
  3. Step 3: Cross multiply
    316,316.80x = 474,232.20 × 158,658.40
  4. Step 4: Simplify right side
    316,316.80x = 75,240,922,080.48
  5. Step 5: Solve for x
    x = 75,240,922,080.48/316,316.80
  6. Step 6: Final answer
    x = 237,865.72

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1.5x scale

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.