Home / 289,355,167.88-399,344,364-171,880,962.20

Finding the Fourth Proportional to 289,355,167.88, 399,344,364 and 171,880,962.20

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Solution

The fourth proportional to 289,355,167.88, 399,344,364 and 171,880,962.20 is: 237,216,062.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,355,167.88 : 399,344,364 = 171,880,962.20 : x
  2. Step 2: Convert to fraction form
    289,355,167.88/399,344,364 = 171,880,962.20/x
  3. Step 3: Cross multiply
    289,355,167.88x = 399,344,364 × 171,880,962.20
  4. Step 4: Simplify right side
    289,355,167.88x = 68,639,693,533,467,040
  5. Step 5: Solve for x
    x = 68,639,693,533,467,040/289,355,167.88
  6. Step 6: Final answer
    x = 237,216,062.31

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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.