Home / 420,316.72-580,038.90-229,334.08

Finding the Fourth Proportional to 420,316.72, 580,038.90 and 229,334.08

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Solution

The fourth proportional to 420,316.72, 580,038.90 and 229,334.08 is: 316,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,316.72 : 580,038.90 = 229,334.08 : x
  2. Step 2: Convert to fraction form
    420,316.72/580,038.90 = 229,334.08/x
  3. Step 3: Cross multiply
    420,316.72x = 580,038.90 × 229,334.08
  4. Step 4: Simplify right side
    420,316.72x = 133,022,687,495.71
  5. Step 5: Solve for x
    x = 133,022,687,495.71/420,316.72
  6. Step 6: Final answer
    x = 316,482.03

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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.