Home / 289,284,872.64-399,216,054.24-157,128,450

Finding the Fourth Proportional to 289,284,872.64, 399,216,054.24 and 157,128,450

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Solution

The fourth proportional to 289,284,872.64, 399,216,054.24 and 157,128,450 is: 216,838,852.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,284,872.64 : 399,216,054.24 = 157,128,450 : x
  2. Step 2: Convert to fraction form
    289,284,872.64/399,216,054.24 = 157,128,450/x
  3. Step 3: Cross multiply
    289,284,872.64x = 399,216,054.24 × 157,128,450
  4. Step 4: Simplify right side
    289,284,872.64x = 62,728,199,817,847,128
  5. Step 5: Solve for x
    x = 62,728,199,817,847,128/289,284,872.64
  6. Step 6: Final answer
    x = 216,838,852.46

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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.