Home / 210,937.04-316,456.32-86,278.40

Finding the Fourth Proportional to 210,937.04, 316,456.32 and 86,278.40

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Solution

The fourth proportional to 210,937.04, 316,456.32 and 86,278.40 is: 129,438.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,937.04 : 316,456.32 = 86,278.40 : x
  2. Step 2: Convert to fraction form
    210,937.04/316,456.32 = 86,278.40/x
  3. Step 3: Cross multiply
    210,937.04x = 316,456.32 × 86,278.40
  4. Step 4: Simplify right side
    210,937.04x = 27,303,344,959.49
  5. Step 5: Solve for x
    x = 27,303,344,959.49/210,937.04
  6. Step 6: Final answer
    x = 129,438.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.