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Finding the Fourth Proportional to 281,477.61, 388,342.65 and 160,531.92

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Solution

The fourth proportional to 281,477.61, 388,342.65 and 160,531.92 is: 221,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,477.61 : 388,342.65 = 160,531.92 : x
  2. Step 2: Convert to fraction form
    281,477.61/388,342.65 = 160,531.92/x
  3. Step 3: Cross multiply
    281,477.61x = 388,342.65 × 160,531.92
  4. Step 4: Simplify right side
    281,477.61x = 62,341,391,222.39
  5. Step 5: Solve for x
    x = 62,341,391,222.39/281,477.61
  6. Step 6: Final answer
    x = 221,479.04

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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.