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Finding the Fourth Proportional to 243,572.80, 364,970.40 and 203,915.20

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Solution

The fourth proportional to 243,572.80, 364,970.40 and 203,915.20 is: 305,547.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,572.80 : 364,970.40 = 203,915.20 : x
  2. Step 2: Convert to fraction form
    243,572.80/364,970.40 = 203,915.20/x
  3. Step 3: Cross multiply
    243,572.80x = 364,970.40 × 203,915.20
  4. Step 4: Simplify right side
    243,572.80x = 74,423,012,110.08
  5. Step 5: Solve for x
    x = 74,423,012,110.08/243,572.80
  6. Step 6: Final answer
    x = 305,547.30

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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.