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Finding the Fourth Proportional to 284,798.66, 392,878.85 and 187,900.38

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Solution

The fourth proportional to 284,798.66, 392,878.85 and 187,900.38 is: 259,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,798.66 : 392,878.85 = 187,900.38 : x
  2. Step 2: Convert to fraction form
    284,798.66/392,878.85 = 187,900.38/x
  3. Step 3: Cross multiply
    284,798.66x = 392,878.85 × 187,900.38
  4. Step 4: Simplify right side
    284,798.66x = 73,822,083,500.79
  5. Step 5: Solve for x
    x = 73,822,083,500.79/284,798.66
  6. Step 6: Final answer
    x = 259,207.98

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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.