Home / 380,648,008.40-525,294,251.61-215,635,577.90

Finding the Fourth Proportional to 380,648,008.40, 525,294,251.61 and 215,635,577.90

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Solution

The fourth proportional to 380,648,008.40, 525,294,251.61 and 215,635,577.90 is: 297,577,097.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,648,008.40 : 525,294,251.61 = 215,635,577.90 : x
  2. Step 2: Convert to fraction form
    380,648,008.40/525,294,251.61 = 215,635,577.90/x
  3. Step 3: Cross multiply
    380,648,008.40x = 525,294,251.61 × 215,635,577.90
  4. Step 4: Simplify right side
    380,648,008.40x = 113,272,129,513,470,368
  5. Step 5: Solve for x
    x = 113,272,129,513,470,368/380,648,008.40
  6. Step 6: Final answer
    x = 297,577,097.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.