Home / 260,365.06-390,407.10-118,132.72

Finding the Fourth Proportional to 260,365.06, 390,407.10 and 118,132.72

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Solution

The fourth proportional to 260,365.06, 390,407.10 and 118,132.72 is: 177,135.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,365.06 : 390,407.10 = 118,132.72 : x
  2. Step 2: Convert to fraction form
    260,365.06/390,407.10 = 118,132.72/x
  3. Step 3: Cross multiply
    260,365.06x = 390,407.10 × 118,132.72
  4. Step 4: Simplify right side
    260,365.06x = 46,119,852,630.31
  5. Step 5: Solve for x
    x = 46,119,852,630.31/260,365.06
  6. Step 6: Final answer
    x = 177,135.34

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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.