Home / 212,931,013.58-319,422,018.36-65,359,243.68

Finding the Fourth Proportional to 212,931,013.58, 319,422,018.36 and 65,359,243.68

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Solution

The fourth proportional to 212,931,013.58, 319,422,018.36 and 65,359,243.68 is: 98,046,692.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,931,013.58 : 319,422,018.36 = 65,359,243.68 : x
  2. Step 2: Convert to fraction form
    212,931,013.58/319,422,018.36 = 65,359,243.68/x
  3. Step 3: Cross multiply
    212,931,013.58x = 319,422,018.36 × 65,359,243.68
  4. Step 4: Simplify right side
    212,931,013.58x = 20,877,181,534,748,676
  5. Step 5: Solve for x
    x = 20,877,181,534,748,676/212,931,013.58
  6. Step 6: Final answer
    x = 98,046,692.14

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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.