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Finding the Fourth Proportional to 384,005.60, 575,230.80 and 265,810.40

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Solution

The fourth proportional to 384,005.60, 575,230.80 and 265,810.40 is: 398,177.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,005.60 : 575,230.80 = 265,810.40 : x
  2. Step 2: Convert to fraction form
    384,005.60/575,230.80 = 265,810.40/x
  3. Step 3: Cross multiply
    384,005.60x = 575,230.80 × 265,810.40
  4. Step 4: Simplify right side
    384,005.60x = 152,902,329,040.32
  5. Step 5: Solve for x
    x = 152,902,329,040.32/384,005.60
  6. Step 6: Final answer
    x = 398,177.34

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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.