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Finding the Fourth Proportional to 260,045.60, 390,068.40 and 181,248.80

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Solution

The fourth proportional to 260,045.60, 390,068.40 and 181,248.80 is: 271,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,045.60 : 390,068.40 = 181,248.80 : x
  2. Step 2: Convert to fraction form
    260,045.60/390,068.40 = 181,248.80/x
  3. Step 3: Cross multiply
    260,045.60x = 390,068.40 × 181,248.80
  4. Step 4: Simplify right side
    260,045.60x = 70,699,429,417.92
  5. Step 5: Solve for x
    x = 70,699,429,417.92/260,045.60
  6. Step 6: Final answer
    x = 271,873.20

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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.