Home / 388,645,999.32-583,071,202.98-139,676,403

Finding the Fourth Proportional to 388,645,999.32, 583,071,202.98 and 139,676,403

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Solution

The fourth proportional to 388,645,999.32, 583,071,202.98 and 139,676,403 is: 209,551,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,645,999.32 : 583,071,202.98 = 139,676,403 : x
  2. Step 2: Convert to fraction form
    388,645,999.32/583,071,202.98 = 139,676,403/x
  3. Step 3: Cross multiply
    388,645,999.32x = 583,071,202.98 × 139,676,403
  4. Step 4: Simplify right side
    388,645,999.32x = 81,441,288,325,129,280
  5. Step 5: Solve for x
    x = 81,441,288,325,129,280/388,645,999.32
  6. Step 6: Final answer
    x = 209,551,335.84

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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.