Home / 260,332.79-390,053.41-142,087.10

Finding the Fourth Proportional to 260,332.79, 390,053.41 and 142,087.10

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Solution

The fourth proportional to 260,332.79, 390,053.41 and 142,087.10 is: 212,887.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,332.79 : 390,053.41 = 142,087.10 : x
  2. Step 2: Convert to fraction form
    260,332.79/390,053.41 = 142,087.10/x
  3. Step 3: Cross multiply
    260,332.79x = 390,053.41 × 142,087.10
  4. Step 4: Simplify right side
    260,332.79x = 55,421,555,566.53
  5. Step 5: Solve for x
    x = 55,421,555,566.53/260,332.79
  6. Step 6: Final answer
    x = 212,887.35

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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.