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Finding the Fourth Proportional to 353,893.95, 530,870.99 and 312,264.41

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Solution

The fourth proportional to 353,893.95, 530,870.99 and 312,264.41 is: 468,423.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,893.95 : 530,870.99 = 312,264.41 : x
  2. Step 2: Convert to fraction form
    353,893.95/530,870.99 = 312,264.41/x
  3. Step 3: Cross multiply
    353,893.95x = 530,870.99 × 312,264.41
  4. Step 4: Simplify right side
    353,893.95x = 165,772,112,262.79
  5. Step 5: Solve for x
    x = 165,772,112,262.79/353,893.95
  6. Step 6: Final answer
    x = 468,423.13

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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.