Home / 390,496,132.92-538,751,189.07-223,112,294.58

Finding the Fourth Proportional to 390,496,132.92, 538,751,189.07 and 223,112,294.58

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Solution

The fourth proportional to 390,496,132.92, 538,751,189.07 and 223,112,294.58 is: 307,818,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,496,132.92 : 538,751,189.07 = 223,112,294.58 : x
  2. Step 2: Convert to fraction form
    390,496,132.92/538,751,189.07 = 223,112,294.58/x
  3. Step 3: Cross multiply
    390,496,132.92x = 538,751,189.07 × 223,112,294.58
  4. Step 4: Simplify right side
    390,496,132.92x = 120,202,014,001,111,136
  5. Step 5: Solve for x
    x = 120,202,014,001,111,136/390,496,132.92
  6. Step 6: Final answer
    x = 307,818,705.15

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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.