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Finding the Fourth Proportional to 423,436.19, 635,155.19 and 297,639.35

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Solution

The fourth proportional to 423,436.19, 635,155.19 and 297,639.35 is: 446,459.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,436.19 : 635,155.19 = 297,639.35 : x
  2. Step 2: Convert to fraction form
    423,436.19/635,155.19 = 297,639.35/x
  3. Step 3: Cross multiply
    423,436.19x = 635,155.19 × 297,639.35
  4. Step 4: Simplify right side
    423,436.19x = 189,047,173,236.75
  5. Step 5: Solve for x
    x = 189,047,173,236.75/423,436.19
  6. Step 6: Final answer
    x = 446,459.66

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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.