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Finding the Fourth Proportional to 309,292.61, 426,803.59 and 181,943.60

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Solution

The fourth proportional to 309,292.61, 426,803.59 and 181,943.60 is: 251,070.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,292.61 : 426,803.59 = 181,943.60 : x
  2. Step 2: Convert to fraction form
    309,292.61/426,803.59 = 181,943.60/x
  3. Step 3: Cross multiply
    309,292.61x = 426,803.59 × 181,943.60
  4. Step 4: Simplify right side
    309,292.61x = 77,654,181,657.52
  5. Step 5: Solve for x
    x = 77,654,181,657.52/309,292.61
  6. Step 6: Final answer
    x = 251,070.28

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1.5x scale

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.