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Finding the Fourth Proportional to 431,326.40, 646,989.60 and 244,702.40

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Solution

The fourth proportional to 431,326.40, 646,989.60 and 244,702.40 is: 367,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,326.40 : 646,989.60 = 244,702.40 : x
  2. Step 2: Convert to fraction form
    431,326.40/646,989.60 = 244,702.40/x
  3. Step 3: Cross multiply
    431,326.40x = 646,989.60 × 244,702.40
  4. Step 4: Simplify right side
    431,326.40x = 158,319,907,895.04
  5. Step 5: Solve for x
    x = 158,319,907,895.04/431,326.40
  6. Step 6: Final answer
    x = 367,053.60

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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.