Home / 284,612.28-392,749.61-157,280.28

Finding the Fourth Proportional to 284,612.28, 392,749.61 and 157,280.28

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Solution

The fourth proportional to 284,612.28, 392,749.61 and 157,280.28 is: 217,038.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,612.28 : 392,749.61 = 157,280.28 : x
  2. Step 2: Convert to fraction form
    284,612.28/392,749.61 = 157,280.28/x
  3. Step 3: Cross multiply
    284,612.28x = 392,749.61 × 157,280.28
  4. Step 4: Simplify right side
    284,612.28x = 61,771,767,844.29
  5. Step 5: Solve for x
    x = 61,771,767,844.29/284,612.28
  6. Step 6: Final answer
    x = 217,038.31

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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.