Home / 284,739.12-392,920.74-157,397.40

Finding the Fourth Proportional to 284,739.12, 392,920.74 and 157,397.40

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Solution

The fourth proportional to 284,739.12, 392,920.74 and 157,397.40 is: 217,197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,739.12 : 392,920.74 = 157,397.40 : x
  2. Step 2: Convert to fraction form
    284,739.12/392,920.74 = 157,397.40/x
  3. Step 3: Cross multiply
    284,739.12x = 392,920.74 × 157,397.40
  4. Step 4: Simplify right side
    284,739.12x = 61,844,702,882.08
  5. Step 5: Solve for x
    x = 61,844,702,882.08/284,739.12
  6. Step 6: Final answer
    x = 217,197.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.