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Finding the Fourth Proportional to 170,721.80, 256,082.70 and 52,393.40

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Solution

The fourth proportional to 170,721.80, 256,082.70 and 52,393.40 is: 78,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,721.80 : 256,082.70 = 52,393.40 : x
  2. Step 2: Convert to fraction form
    170,721.80/256,082.70 = 52,393.40/x
  3. Step 3: Cross multiply
    170,721.80x = 256,082.70 × 52,393.40
  4. Step 4: Simplify right side
    170,721.80x = 13,417,043,334.18
  5. Step 5: Solve for x
    x = 13,417,043,334.18/170,721.80
  6. Step 6: Final answer
    x = 78,590.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.