Home / 212,017,064.40-317,789,400.60-82,581,656.40

Finding the Fourth Proportional to 212,017,064.40, 317,789,400.60 and 82,581,656.40

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Solution

The fourth proportional to 212,017,064.40, 317,789,400.60 and 82,581,656.40 is: 123,780,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,017,064.40 : 317,789,400.60 = 82,581,656.40 : x
  2. Step 2: Convert to fraction form
    212,017,064.40/317,789,400.60 = 82,581,656.40/x
  3. Step 3: Cross multiply
    212,017,064.40x = 317,789,400.60 × 82,581,656.40
  4. Step 4: Simplify right side
    212,017,064.40x = 26,243,575,087,911,156
  5. Step 5: Solve for x
    x = 26,243,575,087,911,156/212,017,064.40
  6. Step 6: Final answer
    x = 123,780,485.13

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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.