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Finding the Fourth Proportional to 30,329,266.80, 45,399,421.80 and 21,826,210.80

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Solution

The fourth proportional to 30,329,266.80, 45,399,421.80 and 21,826,210.80 is: 32,671,325.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,329,266.80 : 45,399,421.80 = 21,826,210.80 : x
  2. Step 2: Convert to fraction form
    30,329,266.80/45,399,421.80 = 21,826,210.80/x
  3. Step 3: Cross multiply
    30,329,266.80x = 45,399,421.80 × 21,826,210.80
  4. Step 4: Simplify right side
    30,329,266.80x = 990,897,350,404,915.38
  5. Step 5: Solve for x
    x = 990,897,350,404,915.38/30,329,266.80
  6. Step 6: Final answer
    x = 32,671,325.59

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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.