Home / 404,500,988.88-558,207,390.60-218,857,931.28

Finding the Fourth Proportional to 404,500,988.88, 558,207,390.60 and 218,857,931.28

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Solution

The fourth proportional to 404,500,988.88, 558,207,390.60 and 218,857,931.28 is: 302,021,794.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,500,988.88 : 558,207,390.60 = 218,857,931.28 : x
  2. Step 2: Convert to fraction form
    404,500,988.88/558,207,390.60 = 218,857,931.28/x
  3. Step 3: Cross multiply
    404,500,988.88x = 558,207,390.60 × 218,857,931.28
  4. Step 4: Simplify right side
    404,500,988.88x = 122,168,114,731,922,928
  5. Step 5: Solve for x
    x = 122,168,114,731,922,928/404,500,988.88
  6. Step 6: Final answer
    x = 302,021,794.98

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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.