Home / 281,205,821.40-421,808,732.10-99,452,999.40

Finding the Fourth Proportional to 281,205,821.40, 421,808,732.10 and 99,452,999.40

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Solution

The fourth proportional to 281,205,821.40, 421,808,732.10 and 99,452,999.40 is: 149,179,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,205,821.40 : 421,808,732.10 = 99,452,999.40 : x
  2. Step 2: Convert to fraction form
    281,205,821.40/421,808,732.10 = 99,452,999.40/x
  3. Step 3: Cross multiply
    281,205,821.40x = 421,808,732.10 × 99,452,999.40
  4. Step 4: Simplify right side
    281,205,821.40x = 41,950,143,580,456,064
  5. Step 5: Solve for x
    x = 41,950,143,580,456,064/281,205,821.40
  6. Step 6: Final answer
    x = 149,179,499.10

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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.