Home / 212,778,863.40-319,310,012.70-97,704,172.20

Finding the Fourth Proportional to 212,778,863.40, 319,310,012.70 and 97,704,172.20

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Solution

The fourth proportional to 212,778,863.40, 319,310,012.70 and 97,704,172.20 is: 146,621,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,778,863.40 : 319,310,012.70 = 97,704,172.20 : x
  2. Step 2: Convert to fraction form
    212,778,863.40/319,310,012.70 = 97,704,172.20/x
  3. Step 3: Cross multiply
    212,778,863.40x = 319,310,012.70 × 97,704,172.20
  4. Step 4: Simplify right side
    212,778,863.40x = 31,197,920,466,024,988
  5. Step 5: Solve for x
    x = 31,197,920,466,024,988/212,778,863.40
  6. Step 6: Final answer
    x = 146,621,332.44

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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.