Home / 212,980,655.80-318,904,113.30-135,886,281.40

Finding the Fourth Proportional to 212,980,655.80, 318,904,113.30 and 135,886,281.40

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Solution

The fourth proportional to 212,980,655.80, 318,904,113.30 and 135,886,281.40 is: 203,467,746.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,980,655.80 : 318,904,113.30 = 135,886,281.40 : x
  2. Step 2: Convert to fraction form
    212,980,655.80/318,904,113.30 = 135,886,281.40/x
  3. Step 3: Cross multiply
    212,980,655.80x = 318,904,113.30 × 135,886,281.40
  4. Step 4: Simplify right side
    212,980,655.80x = 43,334,694,079,501,288
  5. Step 5: Solve for x
    x = 43,334,694,079,501,288/212,980,655.80
  6. Step 6: Final answer
    x = 203,467,746.48

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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.