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Finding the Fourth Proportional to 338,461.80, 507,692.70 and 322,909.80

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Solution

The fourth proportional to 338,461.80, 507,692.70 and 322,909.80 is: 484,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,461.80 : 507,692.70 = 322,909.80 : x
  2. Step 2: Convert to fraction form
    338,461.80/507,692.70 = 322,909.80/x
  3. Step 3: Cross multiply
    338,461.80x = 507,692.70 × 322,909.80
  4. Step 4: Simplify right side
    338,461.80x = 163,938,948,218.46
  5. Step 5: Solve for x
    x = 163,938,948,218.46/338,461.80
  6. Step 6: Final answer
    x = 484,364.70

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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.