Home / 398,095,832.72-549,374,799.33-221,895,000.67

Finding the Fourth Proportional to 398,095,832.72, 549,374,799.33 and 221,895,000.67

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Solution

The fourth proportional to 398,095,832.72, 549,374,799.33 and 221,895,000.67 is: 306,216,522.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,095,832.72 : 549,374,799.33 = 221,895,000.67 : x
  2. Step 2: Convert to fraction form
    398,095,832.72/549,374,799.33 = 221,895,000.67/x
  3. Step 3: Cross multiply
    398,095,832.72x = 549,374,799.33 × 221,895,000.67
  4. Step 4: Simplify right side
    398,095,832.72x = 121,903,521,465,411,472
  5. Step 5: Solve for x
    x = 121,903,521,465,411,472/398,095,832.72
  6. Step 6: Final answer
    x = 306,216,522.37

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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.