Home / 238,066,302.45-357,008,468.73-78,312,421.72

Finding the Fourth Proportional to 238,066,302.45, 357,008,468.73 and 78,312,421.72

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Solution

The fourth proportional to 238,066,302.45, 357,008,468.73 and 78,312,421.72 is: 117,438,702.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,066,302.45 : 357,008,468.73 = 78,312,421.72 : x
  2. Step 2: Convert to fraction form
    238,066,302.45/357,008,468.73 = 78,312,421.72/x
  3. Step 3: Cross multiply
    238,066,302.45x = 357,008,468.73 × 78,312,421.72
  4. Step 4: Simplify right side
    238,066,302.45x = 27,958,197,760,947,780
  5. Step 5: Solve for x
    x = 27,958,197,760,947,780/238,066,302.45
  6. Step 6: Final answer
    x = 117,438,702.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.