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Finding the Fourth Proportional to 334,063.40, 500,511.90 and 287,407.40

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Solution

The fourth proportional to 334,063.40, 500,511.90 and 287,407.40 is: 430,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,063.40 : 500,511.90 = 287,407.40 : x
  2. Step 2: Convert to fraction form
    334,063.40/500,511.90 = 287,407.40/x
  3. Step 3: Cross multiply
    334,063.40x = 500,511.90 × 287,407.40
  4. Step 4: Simplify right side
    334,063.40x = 143,850,823,848.06
  5. Step 5: Solve for x
    x = 143,850,823,848.06/334,063.40
  6. Step 6: Final answer
    x = 430,609.35

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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.