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Finding the Fourth Proportional to 280,674.59, 387,326.41 and 153,347.45

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Solution

The fourth proportional to 280,674.59, 387,326.41 and 153,347.45 is: 211,617.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,674.59 : 387,326.41 = 153,347.45 : x
  2. Step 2: Convert to fraction form
    280,674.59/387,326.41 = 153,347.45/x
  3. Step 3: Cross multiply
    280,674.59x = 387,326.41 × 153,347.45
  4. Step 4: Simplify right side
    280,674.59x = 59,395,514,971.15
  5. Step 5: Solve for x
    x = 59,395,514,971.15/280,674.59
  6. Step 6: Final answer
    x = 211,617.00

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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.