Home / 260,307.16-390,015.12-142,061.56

Finding the Fourth Proportional to 260,307.16, 390,015.12 and 142,061.56

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Solution

The fourth proportional to 260,307.16, 390,015.12 and 142,061.56 is: 212,849.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,307.16 : 390,015.12 = 142,061.56 : x
  2. Step 2: Convert to fraction form
    260,307.16/390,015.12 = 142,061.56/x
  3. Step 3: Cross multiply
    260,307.16x = 390,015.12 × 142,061.56
  4. Step 4: Simplify right side
    260,307.16x = 55,406,156,370.79
  5. Step 5: Solve for x
    x = 55,406,156,370.79/260,307.16
  6. Step 6: Final answer
    x = 212,849.14

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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.