Home / 272,968,245.40-409,452,368.10-78,885,992.20

Finding the Fourth Proportional to 272,968,245.40, 409,452,368.10 and 78,885,992.20

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Solution

The fourth proportional to 272,968,245.40, 409,452,368.10 and 78,885,992.20 is: 118,328,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,968,245.40 : 409,452,368.10 = 78,885,992.20 : x
  2. Step 2: Convert to fraction form
    272,968,245.40/409,452,368.10 = 78,885,992.20/x
  3. Step 3: Cross multiply
    272,968,245.40x = 409,452,368.10 × 78,885,992.20
  4. Step 4: Simplify right side
    272,968,245.40x = 32,300,056,316,208,132
  5. Step 5: Solve for x
    x = 32,300,056,316,208,132/272,968,245.40
  6. Step 6: Final answer
    x = 118,328,988.30

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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.