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Finding the Fourth Proportional to 305,985,894.30, 458,978,841.45 and 258,634,501.20

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Solution

The fourth proportional to 305,985,894.30, 458,978,841.45 and 258,634,501.20 is: 387,951,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,985,894.30 : 458,978,841.45 = 258,634,501.20 : x
  2. Step 2: Convert to fraction form
    305,985,894.30/458,978,841.45 = 258,634,501.20/x
  3. Step 3: Cross multiply
    305,985,894.30x = 458,978,841.45 × 258,634,501.20
  4. Step 4: Simplify right side
    305,985,894.30x = 118,707,763,719,774,624
  5. Step 5: Solve for x
    x = 118,707,763,719,774,624/305,985,894.30
  6. Step 6: Final answer
    x = 387,951,751.80

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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.