Home / 291,221,390.40-436,832,085.60-97,139,137.20

Finding the Fourth Proportional to 291,221,390.40, 436,832,085.60 and 97,139,137.20

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Solution

The fourth proportional to 291,221,390.40, 436,832,085.60 and 97,139,137.20 is: 145,708,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,221,390.40 : 436,832,085.60 = 97,139,137.20 : x
  2. Step 2: Convert to fraction form
    291,221,390.40/436,832,085.60 = 97,139,137.20/x
  3. Step 3: Cross multiply
    291,221,390.40x = 436,832,085.60 × 97,139,137.20
  4. Step 4: Simplify right side
    291,221,390.40x = 42,433,491,896,460,544
  5. Step 5: Solve for x
    x = 42,433,491,896,460,544/291,221,390.40
  6. Step 6: Final answer
    x = 145,708,705.80

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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.