Home / 368,412,423.70-508,453,726.40-209,681,139.96

Finding the Fourth Proportional to 368,412,423.70, 508,453,726.40 and 209,681,139.96

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Solution

The fourth proportional to 368,412,423.70, 508,453,726.40 and 209,681,139.96 is: 289,385,346.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,412,423.70 : 508,453,726.40 = 209,681,139.96 : x
  2. Step 2: Convert to fraction form
    368,412,423.70/508,453,726.40 = 209,681,139.96/x
  3. Step 3: Cross multiply
    368,412,423.70x = 508,453,726.40 × 209,681,139.96
  4. Step 4: Simplify right side
    368,412,423.70x = 106,613,156,968,461,952
  5. Step 5: Solve for x
    x = 106,613,156,968,461,952/368,412,423.70
  6. Step 6: Final answer
    x = 289,385,346.72

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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.