Home / 260,335.04-390,056.76-142,089.35

Finding the Fourth Proportional to 260,335.04, 390,056.76 and 142,089.35

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Solution

The fourth proportional to 260,335.04, 390,056.76 and 142,089.35 is: 212,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,335.04 : 390,056.76 = 142,089.35 : x
  2. Step 2: Convert to fraction form
    260,335.04/390,056.76 = 142,089.35/x
  3. Step 3: Cross multiply
    260,335.04x = 390,056.76 × 142,089.35
  4. Step 4: Simplify right side
    260,335.04x = 55,422,909,541.22
  5. Step 5: Solve for x
    x = 55,422,909,541.22/260,335.04
  6. Step 6: Final answer
    x = 212,890.71

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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.