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Finding the Fourth Proportional to 384,921.60, 577,382.40 and 266,726.40

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Solution

The fourth proportional to 384,921.60, 577,382.40 and 266,726.40 is: 400,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,921.60 : 577,382.40 = 266,726.40 : x
  2. Step 2: Convert to fraction form
    384,921.60/577,382.40 = 266,726.40/x
  3. Step 3: Cross multiply
    384,921.60x = 577,382.40 × 266,726.40
  4. Step 4: Simplify right side
    384,921.60x = 154,003,128,975.36
  5. Step 5: Solve for x
    x = 154,003,128,975.36/384,921.60
  6. Step 6: Final answer
    x = 400,089.60

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1.5x scale

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.