Home / 317,655.20-438,387.18-210,038.60

Finding the Fourth Proportional to 317,655.20, 438,387.18 and 210,038.60

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Solution

The fourth proportional to 317,655.20, 438,387.18 and 210,038.60 is: 289,868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,655.20 : 438,387.18 = 210,038.60 : x
  2. Step 2: Convert to fraction form
    317,655.20/438,387.18 = 210,038.60/x
  3. Step 3: Cross multiply
    317,655.20x = 438,387.18 × 210,038.60
  4. Step 4: Simplify right side
    317,655.20x = 92,078,229,545.15
  5. Step 5: Solve for x
    x = 92,078,229,545.15/317,655.20
  6. Step 6: Final answer
    x = 289,868.48

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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.