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Finding the Fourth Proportional to 260,045.80, 390,068.70 and 260,045.80

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Solution

The fourth proportional to 260,045.80, 390,068.70 and 260,045.80 is: 390,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,045.80 : 390,068.70 = 260,045.80 : x
  2. Step 2: Convert to fraction form
    260,045.80/390,068.70 = 260,045.80/x
  3. Step 3: Cross multiply
    260,045.80x = 390,068.70 × 260,045.80
  4. Step 4: Simplify right side
    260,045.80x = 101,435,727,146.46
  5. Step 5: Solve for x
    x = 101,435,727,146.46/260,045.80
  6. Step 6: Final answer
    x = 390,068.70

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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.