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Finding the Fourth Proportional to 612,903.10, 919,354.65 and 163,623.10

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Solution

The fourth proportional to 612,903.10, 919,354.65 and 163,623.10 is: 245,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,903.10 : 919,354.65 = 163,623.10 : x
  2. Step 2: Convert to fraction form
    612,903.10/919,354.65 = 163,623.10/x
  3. Step 3: Cross multiply
    612,903.10x = 919,354.65 × 163,623.10
  4. Step 4: Simplify right side
    612,903.10x = 150,427,657,832.42
  5. Step 5: Solve for x
    x = 150,427,657,832.42/612,903.10
  6. Step 6: Final answer
    x = 245,434.65

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Similar ratio
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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.