Home / 290,107,741.28-435,208,880.30-85,656,483.68

Finding the Fourth Proportional to 290,107,741.28, 435,208,880.30 and 85,656,483.68

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Solution

The fourth proportional to 290,107,741.28, 435,208,880.30 and 85,656,483.68 is: 128,498,681.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,107,741.28 : 435,208,880.30 = 85,656,483.68 : x
  2. Step 2: Convert to fraction form
    290,107,741.28/435,208,880.30 = 85,656,483.68/x
  3. Step 3: Cross multiply
    290,107,741.28x = 435,208,880.30 × 85,656,483.68
  4. Step 4: Simplify right side
    290,107,741.28x = 37,278,462,352,808,024
  5. Step 5: Solve for x
    x = 37,278,462,352,808,024/290,107,741.28
  6. Step 6: Final answer
    x = 128,498,681.86

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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.