Home / 315,526.36-435,424.10-172,286.28

Finding the Fourth Proportional to 315,526.36, 435,424.10 and 172,286.28

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Solution

The fourth proportional to 315,526.36, 435,424.10 and 172,286.28 is: 237,753.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,526.36 : 435,424.10 = 172,286.28 : x
  2. Step 2: Convert to fraction form
    315,526.36/435,424.10 = 172,286.28/x
  3. Step 3: Cross multiply
    315,526.36x = 435,424.10 × 172,286.28
  4. Step 4: Simplify right side
    315,526.36x = 75,017,598,411.35
  5. Step 5: Solve for x
    x = 75,017,598,411.35/315,526.36
  6. Step 6: Final answer
    x = 237,753.82

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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.