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Finding the Fourth Proportional to 280,953.90, 387,672.89 and 160,100.28

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Solution

The fourth proportional to 280,953.90, 387,672.89 and 160,100.28 is: 220,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,953.90 : 387,672.89 = 160,100.28 : x
  2. Step 2: Convert to fraction form
    280,953.90/387,672.89 = 160,100.28/x
  3. Step 3: Cross multiply
    280,953.90x = 387,672.89 × 160,100.28
  4. Step 4: Simplify right side
    280,953.90x = 62,066,537,436.91
  5. Step 5: Solve for x
    x = 62,066,537,436.91/280,953.90
  6. Step 6: Final answer
    x = 220,913.60

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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.