Home / 260,323.16-390,038.97-142,077.47

Finding the Fourth Proportional to 260,323.16, 390,038.97 and 142,077.47

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Solution

The fourth proportional to 260,323.16, 390,038.97 and 142,077.47 is: 212,872.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,323.16 : 390,038.97 = 142,077.47 : x
  2. Step 2: Convert to fraction form
    260,323.16/390,038.97 = 142,077.47/x
  3. Step 3: Cross multiply
    260,323.16x = 390,038.97 × 142,077.47
  4. Step 4: Simplify right side
    260,323.16x = 55,415,750,059.01
  5. Step 5: Solve for x
    x = 55,415,750,059.01/260,323.16
  6. Step 6: Final answer
    x = 212,872.92

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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.