Home / 312,331.07-431,017.02-169,091.12

Finding the Fourth Proportional to 312,331.07, 431,017.02 and 169,091.12

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Solution

The fourth proportional to 312,331.07, 431,017.02 and 169,091.12 is: 233,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,331.07 : 431,017.02 = 169,091.12 : x
  2. Step 2: Convert to fraction form
    312,331.07/431,017.02 = 169,091.12/x
  3. Step 3: Cross multiply
    312,331.07x = 431,017.02 × 169,091.12
  4. Step 4: Simplify right side
    312,331.07x = 72,881,148,495.78
  5. Step 5: Solve for x
    x = 72,881,148,495.78/312,331.07
  6. Step 6: Final answer
    x = 233,345.82

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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.