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Finding the Fourth Proportional to 404,657.76, 607,064.80 and 155,320.32

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Solution

The fourth proportional to 404,657.76, 607,064.80 and 155,320.32 is: 233,010.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,657.76 : 607,064.80 = 155,320.32 : x
  2. Step 2: Convert to fraction form
    404,657.76/607,064.80 = 155,320.32/x
  3. Step 3: Cross multiply
    404,657.76x = 607,064.80 × 155,320.32
  4. Step 4: Simplify right side
    404,657.76x = 94,289,498,996.74
  5. Step 5: Solve for x
    x = 94,289,498,996.74/404,657.76
  6. Step 6: Final answer
    x = 233,010.48

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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.