Home / 284,275.02-392,289.20-155,211.12

Finding the Fourth Proportional to 284,275.02, 392,289.20 and 155,211.12

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Solution

The fourth proportional to 284,275.02, 392,289.20 and 155,211.12 is: 214,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,275.02 : 392,289.20 = 155,211.12 : x
  2. Step 2: Convert to fraction form
    284,275.02/392,289.20 = 155,211.12/x
  3. Step 3: Cross multiply
    284,275.02x = 392,289.20 × 155,211.12
  4. Step 4: Simplify right side
    284,275.02x = 60,887,646,095.90
  5. Step 5: Solve for x
    x = 60,887,646,095.90/284,275.02
  6. Step 6: Final answer
    x = 214,185.71

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1.5x scale

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.