Home / 217,828,985.40-326,743,478.10-79,654,325.40

Finding the Fourth Proportional to 217,828,985.40, 326,743,478.10 and 79,654,325.40

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Solution

The fourth proportional to 217,828,985.40, 326,743,478.10 and 79,654,325.40 is: 119,481,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,828,985.40 : 326,743,478.10 = 79,654,325.40 : x
  2. Step 2: Convert to fraction form
    217,828,985.40/326,743,478.10 = 79,654,325.40/x
  3. Step 3: Cross multiply
    217,828,985.40x = 326,743,478.10 × 79,654,325.40
  4. Step 4: Simplify right side
    217,828,985.40x = 26,026,531,326,905,176
  5. Step 5: Solve for x
    x = 26,026,531,326,905,176/217,828,985.40
  6. Step 6: Final answer
    x = 119,481,488.10

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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.