Home / 315,526.20-435,443.88-172,299.60

Finding the Fourth Proportional to 315,526.20, 435,443.88 and 172,299.60

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Solution

The fourth proportional to 315,526.20, 435,443.88 and 172,299.60 is: 237,783.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,526.20 : 435,443.88 = 172,299.60 : x
  2. Step 2: Convert to fraction form
    315,526.20/435,443.88 = 172,299.60/x
  3. Step 3: Cross multiply
    315,526.20x = 435,443.88 × 172,299.60
  4. Step 4: Simplify right side
    315,526.20x = 75,026,806,346.45
  5. Step 5: Solve for x
    x = 75,026,806,346.45/315,526.20
  6. Step 6: Final answer
    x = 237,783.13

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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.