Home / 216,899.76-299,279.10-136,280.52

Finding the Fourth Proportional to 216,899.76, 299,279.10 and 136,280.52

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Solution

The fourth proportional to 216,899.76, 299,279.10 and 136,280.52 is: 188,040.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,899.76 : 299,279.10 = 136,280.52 : x
  2. Step 2: Convert to fraction form
    216,899.76/299,279.10 = 136,280.52/x
  3. Step 3: Cross multiply
    216,899.76x = 299,279.10 × 136,280.52
  4. Step 4: Simplify right side
    216,899.76x = 40,785,911,373.13
  5. Step 5: Solve for x
    x = 40,785,911,373.13/216,899.76
  6. Step 6: Final answer
    x = 188,040.37

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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.