Home / 216,923,627.85-299,398,056.06-128,866,544.16

Finding the Fourth Proportional to 216,923,627.85, 299,398,056.06 and 128,866,544.16

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Solution

The fourth proportional to 216,923,627.85, 299,398,056.06 and 128,866,544.16 is: 177,861,642.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,923,627.85 : 299,398,056.06 = 128,866,544.16 : x
  2. Step 2: Convert to fraction form
    216,923,627.85/299,398,056.06 = 128,866,544.16/x
  3. Step 3: Cross multiply
    216,923,627.85x = 299,398,056.06 × 128,866,544.16
  4. Step 4: Simplify right side
    216,923,627.85x = 38,582,392,812,674,144
  5. Step 5: Solve for x
    x = 38,582,392,812,674,144/216,923,627.85
  6. Step 6: Final answer
    x = 177,861,642.81

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1.5x scale

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.