Home / 312,326.32-431,013.72-169,089.40

Finding the Fourth Proportional to 312,326.32, 431,013.72 and 169,089.40

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Solution

The fourth proportional to 312,326.32, 431,013.72 and 169,089.40 is: 233,345.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,326.32 : 431,013.72 = 169,089.40 : x
  2. Step 2: Convert to fraction form
    312,326.32/431,013.72 = 169,089.40/x
  3. Step 3: Cross multiply
    312,326.32x = 431,013.72 × 169,089.40
  4. Step 4: Simplify right side
    312,326.32x = 72,879,851,306.57
  5. Step 5: Solve for x
    x = 72,879,851,306.57/312,326.32
  6. Step 6: Final answer
    x = 233,345.21

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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.