Home / 292,039,115.90-438,030,205.05-76,628,363.90

Finding the Fourth Proportional to 292,039,115.90, 438,030,205.05 and 76,628,363.90

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Solution

The fourth proportional to 292,039,115.90, 438,030,205.05 and 76,628,363.90 is: 114,935,075.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,039,115.90 : 438,030,205.05 = 76,628,363.90 : x
  2. Step 2: Convert to fraction form
    292,039,115.90/438,030,205.05 = 76,628,363.90/x
  3. Step 3: Cross multiply
    292,039,115.90x = 438,030,205.05 × 76,628,363.90
  4. Step 4: Simplify right side
    292,039,115.90x = 33,565,537,951,763,020
  5. Step 5: Solve for x
    x = 33,565,537,951,763,020/292,039,115.90
  6. Step 6: Final answer
    x = 114,935,075.90

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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.