Home / 216,487,386.83-298,795,995.59-128,430,261.83

Finding the Fourth Proportional to 216,487,386.83, 298,795,995.59 and 128,430,261.83

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Solution

The fourth proportional to 216,487,386.83, 298,795,995.59 and 128,430,261.83 is: 177,259,509.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,487,386.83 : 298,795,995.59 = 128,430,261.83 : x
  2. Step 2: Convert to fraction form
    216,487,386.83/298,795,995.59 = 128,430,261.83/x
  3. Step 3: Cross multiply
    216,487,386.83x = 298,795,995.59 × 128,430,261.83
  4. Step 4: Simplify right side
    216,487,386.83x = 38,374,447,945,243,096
  5. Step 5: Solve for x
    x = 38,374,447,945,243,096/216,487,386.83
  6. Step 6: Final answer
    x = 177,259,509.24

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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.