Home / 261,423.12-392,017.32-74,390.16

Finding the Fourth Proportional to 261,423.12, 392,017.32 and 74,390.16

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Solution

The fourth proportional to 261,423.12, 392,017.32 and 74,390.16 is: 111,551.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,423.12 : 392,017.32 = 74,390.16 : x
  2. Step 2: Convert to fraction form
    261,423.12/392,017.32 = 74,390.16/x
  3. Step 3: Cross multiply
    261,423.12x = 392,017.32 × 74,390.16
  4. Step 4: Simplify right side
    261,423.12x = 29,162,231,157.57
  5. Step 5: Solve for x
    x = 29,162,231,157.57/261,423.12
  6. Step 6: Final answer
    x = 111,551.84

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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.