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Finding the Fourth Proportional to 260,078.40, 390,700.80 and 181,346.40

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Solution

The fourth proportional to 260,078.40, 390,700.80 and 181,346.40 is: 272,426.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,078.40 : 390,700.80 = 181,346.40 : x
  2. Step 2: Convert to fraction form
    260,078.40/390,700.80 = 181,346.40/x
  3. Step 3: Cross multiply
    260,078.40x = 390,700.80 × 181,346.40
  4. Step 4: Simplify right side
    260,078.40x = 70,852,183,557.12
  5. Step 5: Solve for x
    x = 70,852,183,557.12/260,078.40
  6. Step 6: Final answer
    x = 272,426.25

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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.