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Finding the Fourth Proportional to 471,280.95, 707,030.79 and 155,718.72

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Solution

The fourth proportional to 471,280.95, 707,030.79 and 155,718.72 is: 233,614.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,280.95 : 707,030.79 = 155,718.72 : x
  2. Step 2: Convert to fraction form
    471,280.95/707,030.79 = 155,718.72/x
  3. Step 3: Cross multiply
    471,280.95x = 707,030.79 × 155,718.72
  4. Step 4: Simplify right side
    471,280.95x = 110,097,929,619.39
  5. Step 5: Solve for x
    x = 110,097,929,619.39/471,280.95
  6. Step 6: Final answer
    x = 233,614.22

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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.