Home / 420,357.18-580,088.06-229,373.76

Finding the Fourth Proportional to 420,357.18, 580,088.06 and 229,373.76

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Solution

The fourth proportional to 420,357.18, 580,088.06 and 229,373.76 is: 316,533.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,357.18 : 580,088.06 = 229,373.76 : x
  2. Step 2: Convert to fraction form
    420,357.18/580,088.06 = 229,373.76/x
  3. Step 3: Cross multiply
    420,357.18x = 580,088.06 × 229,373.76
  4. Step 4: Simplify right side
    420,357.18x = 133,056,979,453.31
  5. Step 5: Solve for x
    x = 133,056,979,453.31/420,357.18
  6. Step 6: Final answer
    x = 316,533.14

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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.