Home / 216,923,767.47-299,398,248.81-128,866,683.78

Finding the Fourth Proportional to 216,923,767.47, 299,398,248.81 and 128,866,683.78

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Solution

The fourth proportional to 216,923,767.47, 299,398,248.81 and 128,866,683.78 is: 177,861,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,923,767.47 : 299,398,248.81 = 128,866,683.78 : x
  2. Step 2: Convert to fraction form
    216,923,767.47/299,398,248.81 = 128,866,683.78/x
  3. Step 3: Cross multiply
    216,923,767.47x = 299,398,248.81 × 128,866,683.78
  4. Step 4: Simplify right side
    216,923,767.47x = 38,582,459,453,684,032
  5. Step 5: Solve for x
    x = 38,582,459,453,684,032/216,923,767.47
  6. Step 6: Final answer
    x = 177,861,835.54

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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.