Home / 260,331.04-390,050.78-142,085.35

Finding the Fourth Proportional to 260,331.04, 390,050.78 and 142,085.35

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Solution

The fourth proportional to 260,331.04, 390,050.78 and 142,085.35 is: 212,884.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,331.04 : 390,050.78 = 142,085.35 : x
  2. Step 2: Convert to fraction form
    260,331.04/390,050.78 = 142,085.35/x
  3. Step 3: Cross multiply
    260,331.04x = 390,050.78 × 142,085.35
  4. Step 4: Simplify right side
    260,331.04x = 55,420,499,643.82
  5. Step 5: Solve for x
    x = 55,420,499,643.82/260,331.04
  6. Step 6: Final answer
    x = 212,884.72

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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.