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Finding the Fourth Proportional to 284,651.60, 392,637.72 and 216,519.06

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Solution

The fourth proportional to 284,651.60, 392,637.72 and 216,519.06 is: 298,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,651.60 : 392,637.72 = 216,519.06 : x
  2. Step 2: Convert to fraction form
    284,651.60/392,637.72 = 216,519.06/x
  3. Step 3: Cross multiply
    284,651.60x = 392,637.72 × 216,519.06
  4. Step 4: Simplify right side
    284,651.60x = 85,013,550,054.94
  5. Step 5: Solve for x
    x = 85,013,550,054.94/284,651.60
  6. Step 6: Final answer
    x = 298,658.26

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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.