Home / 212,931,006.58-319,422,007.86-65,359,236.68

Finding the Fourth Proportional to 212,931,006.58, 319,422,007.86 and 65,359,236.68

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Solution

The fourth proportional to 212,931,006.58, 319,422,007.86 and 65,359,236.68 is: 98,046,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,931,006.58 : 319,422,007.86 = 65,359,236.68 : x
  2. Step 2: Convert to fraction form
    212,931,006.58/319,422,007.86 = 65,359,236.68/x
  3. Step 3: Cross multiply
    212,931,006.58x = 319,422,007.86 × 65,359,236.68
  4. Step 4: Simplify right side
    212,931,006.58x = 20,877,178,612,522,560
  5. Step 5: Solve for x
    x = 20,877,178,612,522,560/212,931,006.58
  6. Step 6: Final answer
    x = 98,046,681.64

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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.