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Finding the Fourth Proportional to 260,509.04, 390,708.88 and 73,476.80

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Solution

The fourth proportional to 260,509.04, 390,708.88 and 73,476.80 is: 110,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,509.04 : 390,708.88 = 73,476.80 : x
  2. Step 2: Convert to fraction form
    260,509.04/390,708.88 = 73,476.80/x
  3. Step 3: Cross multiply
    260,509.04x = 390,708.88 × 73,476.80
  4. Step 4: Simplify right side
    260,509.04x = 28,708,038,233.98
  5. Step 5: Solve for x
    x = 28,708,038,233.98/260,509.04
  6. Step 6: Final answer
    x = 110,199.78

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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.