Home / 212,977,885.20-291,778,341.61-205,013,502.74

Finding the Fourth Proportional to 212,977,885.20, 291,778,341.61 and 205,013,502.74

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Solution

The fourth proportional to 212,977,885.20, 291,778,341.61 and 205,013,502.74 is: 280,867,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,977,885.20 : 291,778,341.61 = 205,013,502.74 : x
  2. Step 2: Convert to fraction form
    212,977,885.20/291,778,341.61 = 205,013,502.74/x
  3. Step 3: Cross multiply
    212,977,885.20x = 291,778,341.61 × 205,013,502.74
  4. Step 4: Simplify right side
    212,977,885.20x = 59,818,499,836,188,040
  5. Step 5: Solve for x
    x = 59,818,499,836,188,040/212,977,885.20
  6. Step 6: Final answer
    x = 280,867,188.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.