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Finding the Fourth Proportional to 387,875.80, 581,808.48 and 151,384.60

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Solution

The fourth proportional to 387,875.80, 581,808.48 and 151,384.60 is: 227,074.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,875.80 : 581,808.48 = 151,384.60 : x
  2. Step 2: Convert to fraction form
    387,875.80/581,808.48 = 151,384.60/x
  3. Step 3: Cross multiply
    387,875.80x = 581,808.48 × 151,384.60
  4. Step 4: Simplify right side
    387,875.80x = 88,076,844,021.41
  5. Step 5: Solve for x
    x = 88,076,844,021.41/387,875.80
  6. Step 6: Final answer
    x = 227,074.86

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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.