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Finding the Fourth Proportional to 502,219.89, 693,068.54 and 272,779.40

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Solution

The fourth proportional to 502,219.89, 693,068.54 and 272,779.40 is: 376,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,219.89 : 693,068.54 = 272,779.40 : x
  2. Step 2: Convert to fraction form
    502,219.89/693,068.54 = 272,779.40/x
  3. Step 3: Cross multiply
    502,219.89x = 693,068.54 × 272,779.40
  4. Step 4: Simplify right side
    502,219.89x = 189,054,817,716.68
  5. Step 5: Solve for x
    x = 189,054,817,716.68/502,219.89
  6. Step 6: Final answer
    x = 376,438.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.