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Finding the Fourth Proportional to 340,056.40, 510,064.76 and 129,715.60

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Solution

The fourth proportional to 340,056.40, 510,064.76 and 129,715.60 is: 194,565.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,056.40 : 510,064.76 = 129,715.60 : x
  2. Step 2: Convert to fraction form
    340,056.40/510,064.76 = 129,715.60/x
  3. Step 3: Cross multiply
    340,056.40x = 510,064.76 × 129,715.60
  4. Step 4: Simplify right side
    340,056.40x = 66,163,356,382.26
  5. Step 5: Solve for x
    x = 66,163,356,382.26/340,056.40
  6. Step 6: Final answer
    x = 194,565.83

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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.