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Finding the Fourth Proportional to 260,547.80, 390,821.70 and 94,314.20

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Solution

The fourth proportional to 260,547.80, 390,821.70 and 94,314.20 is: 141,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,547.80 : 390,821.70 = 94,314.20 : x
  2. Step 2: Convert to fraction form
    260,547.80/390,821.70 = 94,314.20/x
  3. Step 3: Cross multiply
    260,547.80x = 390,821.70 × 94,314.20
  4. Step 4: Simplify right side
    260,547.80x = 36,860,035,978.14
  5. Step 5: Solve for x
    x = 36,860,035,978.14/260,547.80
  6. Step 6: Final answer
    x = 141,471.30

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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.