Home / 388,977,999.05-536,791,244.88-210,361,883.49

Finding the Fourth Proportional to 388,977,999.05, 536,791,244.88 and 210,361,883.49

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Solution

The fourth proportional to 388,977,999.05, 536,791,244.88 and 210,361,883.49 is: 290,300,267.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,977,999.05 : 536,791,244.88 = 210,361,883.49 : x
  2. Step 2: Convert to fraction form
    388,977,999.05/536,791,244.88 = 210,361,883.49/x
  3. Step 3: Cross multiply
    388,977,999.05x = 536,791,244.88 × 210,361,883.49
  4. Step 4: Simplify right side
    388,977,999.05x = 112,920,417,316,700,448
  5. Step 5: Solve for x
    x = 112,920,417,316,700,448/388,977,999.05
  6. Step 6: Final answer
    x = 290,300,267.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.