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Finding the Fourth Proportional to 472,699.44, 709,048.80 and 140,275.44

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Solution

The fourth proportional to 472,699.44, 709,048.80 and 140,275.44 is: 210,413.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,699.44 : 709,048.80 = 140,275.44 : x
  2. Step 2: Convert to fraction form
    472,699.44/709,048.80 = 140,275.44/x
  3. Step 3: Cross multiply
    472,699.44x = 709,048.80 × 140,275.44
  4. Step 4: Simplify right side
    472,699.44x = 99,462,132,401.47
  5. Step 5: Solve for x
    x = 99,462,132,401.47/472,699.44
  6. Step 6: Final answer
    x = 210,413.05

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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.