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Finding the Fourth Proportional to 475,319.18, 655,929.15 and 260,448.86

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Solution

The fourth proportional to 475,319.18, 655,929.15 and 260,448.86 is: 359,413.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,319.18 : 655,929.15 = 260,448.86 : x
  2. Step 2: Convert to fraction form
    475,319.18/655,929.15 = 260,448.86/x
  3. Step 3: Cross multiply
    475,319.18x = 655,929.15 × 260,448.86
  4. Step 4: Simplify right side
    475,319.18x = 170,835,999,358.27
  5. Step 5: Solve for x
    x = 170,835,999,358.27/475,319.18
  6. Step 6: Final answer
    x = 359,413.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.