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Finding the Fourth Proportional to 877,666, 1,316,503.32 and 212,818

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Solution

The fourth proportional to 877,666, 1,316,503.32 and 212,818 is: 319,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,666 : 1,316,503.32 = 212,818 : x
  2. Step 2: Convert to fraction form
    877,666/1,316,503.32 = 212,818/x
  3. Step 3: Cross multiply
    877,666x = 1,316,503.32 × 212,818
  4. Step 4: Simplify right side
    877,666x = 280,175,603,555.76
  5. Step 5: Solve for x
    x = 280,175,603,555.76/877,666
  6. Step 6: Final answer
    x = 319,228.05

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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.