Home / 312,309.28-430,988.20-169,069.32

Finding the Fourth Proportional to 312,309.28, 430,988.20 and 169,069.32

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Solution

The fourth proportional to 312,309.28, 430,988.20 and 169,069.32 is: 233,316.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,309.28 : 430,988.20 = 169,069.32 : x
  2. Step 2: Convert to fraction form
    312,309.28/430,988.20 = 169,069.32/x
  3. Step 3: Cross multiply
    312,309.28x = 430,988.20 × 169,069.32
  4. Step 4: Simplify right side
    312,309.28x = 72,866,881,902.02
  5. Step 5: Solve for x
    x = 72,866,881,902.02/312,309.28
  6. Step 6: Final answer
    x = 233,316.42

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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.