Home / 260,030.30-390,045.45-215,707.10

Finding the Fourth Proportional to 260,030.30, 390,045.45 and 215,707.10

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Solution

The fourth proportional to 260,030.30, 390,045.45 and 215,707.10 is: 323,560.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,030.30 : 390,045.45 = 215,707.10 : x
  2. Step 2: Convert to fraction form
    260,030.30/390,045.45 = 215,707.10/x
  3. Step 3: Cross multiply
    260,030.30x = 390,045.45 × 215,707.10
  4. Step 4: Simplify right side
    260,030.30x = 84,135,572,887.70
  5. Step 5: Solve for x
    x = 84,135,572,887.70/260,030.30
  6. Step 6: Final answer
    x = 323,560.65

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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.