Home / 415,657,120.80-623,541,668.40-143,111,431.20

Finding the Fourth Proportional to 415,657,120.80, 623,541,668.40 and 143,111,431.20

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Solution

The fourth proportional to 415,657,120.80, 623,541,668.40 and 143,111,431.20 is: 214,686,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,657,120.80 : 623,541,668.40 = 143,111,431.20 : x
  2. Step 2: Convert to fraction form
    415,657,120.80/623,541,668.40 = 143,111,431.20/x
  3. Step 3: Cross multiply
    415,657,120.80x = 623,541,668.40 × 143,111,431.20
  4. Step 4: Simplify right side
    415,657,120.80x = 89,235,940,577,559,808
  5. Step 5: Solve for x
    x = 89,235,940,577,559,808/415,657,120.80
  6. Step 6: Final answer
    x = 214,686,423.29

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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.