Home / 305,762,090.40-421,999,608-180,328,073.52

Finding the Fourth Proportional to 305,762,090.40, 421,999,608 and 180,328,073.52

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Solution

The fourth proportional to 305,762,090.40, 421,999,608 and 180,328,073.52 is: 248,881,004.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,762,090.40 : 421,999,608 = 180,328,073.52 : x
  2. Step 2: Convert to fraction form
    305,762,090.40/421,999,608 = 180,328,073.52/x
  3. Step 3: Cross multiply
    305,762,090.40x = 421,999,608 × 180,328,073.52
  4. Step 4: Simplify right side
    305,762,090.40x = 76,098,376,336,835,184
  5. Step 5: Solve for x
    x = 76,098,376,336,835,184/305,762,090.40
  6. Step 6: Final answer
    x = 248,881,004.96

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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.