Home / 216,487,373.76-298,795,977.48-128,430,248.76

Finding the Fourth Proportional to 216,487,373.76, 298,795,977.48 and 128,430,248.76

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Solution

The fourth proportional to 216,487,373.76, 298,795,977.48 and 128,430,248.76 is: 177,259,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,487,373.76 : 298,795,977.48 = 128,430,248.76 : x
  2. Step 2: Convert to fraction form
    216,487,373.76/298,795,977.48 = 128,430,248.76/x
  3. Step 3: Cross multiply
    216,487,373.76x = 298,795,977.48 × 128,430,248.76
  4. Step 4: Simplify right side
    216,487,373.76x = 38,374,441,716,243,760
  5. Step 5: Solve for x
    x = 38,374,441,716,243,760/216,487,373.76
  6. Step 6: Final answer
    x = 177,259,491.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.