Home / 260,303.16-390,009.13-142,057.53

Finding the Fourth Proportional to 260,303.16, 390,009.13 and 142,057.53

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Solution

The fourth proportional to 260,303.16, 390,009.13 and 142,057.53 is: 212,843.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,303.16 : 390,009.13 = 142,057.53 : x
  2. Step 2: Convert to fraction form
    260,303.16/390,009.13 = 142,057.53/x
  3. Step 3: Cross multiply
    260,303.16x = 390,009.13 × 142,057.53
  4. Step 4: Simplify right side
    260,303.16x = 55,403,733,685.25
  5. Step 5: Solve for x
    x = 55,403,733,685.25/260,303.16
  6. Step 6: Final answer
    x = 212,843.11

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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.