Home / 238,921.20-358,381.80-213,116.40

Finding the Fourth Proportional to 238,921.20, 358,381.80 and 213,116.40

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Solution

The fourth proportional to 238,921.20, 358,381.80 and 213,116.40 is: 319,674.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,921.20 : 358,381.80 = 213,116.40 : x
  2. Step 2: Convert to fraction form
    238,921.20/358,381.80 = 213,116.40/x
  3. Step 3: Cross multiply
    238,921.20x = 358,381.80 × 213,116.40
  4. Step 4: Simplify right side
    238,921.20x = 76,377,039,041.52
  5. Step 5: Solve for x
    x = 76,377,039,041.52/238,921.20
  6. Step 6: Final answer
    x = 319,674.60

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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.