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Finding the Fourth Proportional to 559,915.16, 839,478.96 and 260,077.40

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Solution

The fourth proportional to 559,915.16, 839,478.96 and 260,077.40 is: 389,933.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,915.16 : 839,478.96 = 260,077.40 : x
  2. Step 2: Convert to fraction form
    559,915.16/839,478.96 = 260,077.40/x
  3. Step 3: Cross multiply
    559,915.16x = 839,478.96 × 260,077.40
  4. Step 4: Simplify right side
    559,915.16x = 218,329,505,271.50
  5. Step 5: Solve for x
    x = 218,329,505,271.50/559,915.16
  6. Step 6: Final answer
    x = 389,933.19

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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.