Home / 284,639.08-392,778.30-157,314.64

Finding the Fourth Proportional to 284,639.08, 392,778.30 and 157,314.64

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Solution

The fourth proportional to 284,639.08, 392,778.30 and 157,314.64 is: 217,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,639.08 : 392,778.30 = 157,314.64 : x
  2. Step 2: Convert to fraction form
    284,639.08/392,778.30 = 157,314.64/x
  3. Step 3: Cross multiply
    284,639.08x = 392,778.30 × 157,314.64
  4. Step 4: Simplify right side
    284,639.08x = 61,789,776,864.31
  5. Step 5: Solve for x
    x = 61,789,776,864.31/284,639.08
  6. Step 6: Final answer
    x = 217,081.14

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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.