Home / 390,533,703.55-538,783,087.96-223,180,181.89

Finding the Fourth Proportional to 390,533,703.55, 538,783,087.96 and 223,180,181.89

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Solution

The fourth proportional to 390,533,703.55, 538,783,087.96 and 223,180,181.89 is: 307,900,973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,533,703.55 : 538,783,087.96 = 223,180,181.89 : x
  2. Step 2: Convert to fraction form
    390,533,703.55/538,783,087.96 = 223,180,181.89/x
  3. Step 3: Cross multiply
    390,533,703.55x = 538,783,087.96 × 223,180,181.89
  4. Step 4: Simplify right side
    390,533,703.55x = 120,245,707,569,100,672
  5. Step 5: Solve for x
    x = 120,245,707,569,100,672/390,533,703.55
  6. Step 6: Final answer
    x = 307,900,973.66

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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.