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Finding the Fourth Proportional to 287,841.76, 397,223.36 and 160,525.40

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Solution

The fourth proportional to 287,841.76, 397,223.36 and 160,525.40 is: 221,526.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,841.76 : 397,223.36 = 160,525.40 : x
  2. Step 2: Convert to fraction form
    287,841.76/397,223.36 = 160,525.40/x
  3. Step 3: Cross multiply
    287,841.76x = 397,223.36 × 160,525.40
  4. Step 4: Simplify right side
    287,841.76x = 63,764,438,753.34
  5. Step 5: Solve for x
    x = 63,764,438,753.34/287,841.76
  6. Step 6: Final answer
    x = 221,526.02

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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.