Home / 285,131,933.60-427,877,818.20-121,369,428.68

Finding the Fourth Proportional to 285,131,933.60, 427,877,818.20 and 121,369,428.68

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Solution

The fourth proportional to 285,131,933.60, 427,877,818.20 and 121,369,428.68 is: 182,130,726.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,131,933.60 : 427,877,818.20 = 121,369,428.68 : x
  2. Step 2: Convert to fraction form
    285,131,933.60/427,877,818.20 = 121,369,428.68/x
  3. Step 3: Cross multiply
    285,131,933.60x = 427,877,818.20 × 121,369,428.68
  4. Step 4: Simplify right side
    285,131,933.60x = 51,931,286,339,778,904
  5. Step 5: Solve for x
    x = 51,931,286,339,778,904/285,131,933.60
  6. Step 6: Final answer
    x = 182,130,726.94

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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.