Home / 261,019,448.56-390,677,543.84-191,913,929.20

Finding the Fourth Proportional to 261,019,448.56, 390,677,543.84 and 191,913,929.20

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Solution

The fourth proportional to 261,019,448.56, 390,677,543.84 and 191,913,929.20 is: 287,244,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,019,448.56 : 390,677,543.84 = 191,913,929.20 : x
  2. Step 2: Convert to fraction form
    261,019,448.56/390,677,543.84 = 191,913,929.20/x
  3. Step 3: Cross multiply
    261,019,448.56x = 390,677,543.84 × 191,913,929.20
  4. Step 4: Simplify right side
    261,019,448.56x = 74,976,462,488,539,648
  5. Step 5: Solve for x
    x = 74,976,462,488,539,648/261,019,448.56
  6. Step 6: Final answer
    x = 287,244,735.60

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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.