Home / 272,967,820.40-409,451,730.60-78,885,567.20

Finding the Fourth Proportional to 272,967,820.40, 409,451,730.60 and 78,885,567.20

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Solution

The fourth proportional to 272,967,820.40, 409,451,730.60 and 78,885,567.20 is: 118,328,350.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,967,820.40 : 409,451,730.60 = 78,885,567.20 : x
  2. Step 2: Convert to fraction form
    272,967,820.40/409,451,730.60 = 78,885,567.20/x
  3. Step 3: Cross multiply
    272,967,820.40x = 409,451,730.60 × 78,885,567.20
  4. Step 4: Simplify right side
    272,967,820.40x = 32,299,832,009,402,600
  5. Step 5: Solve for x
    x = 32,299,832,009,402,600/272,967,820.40
  6. Step 6: Final answer
    x = 118,328,350.80

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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.