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Finding the Third Proportional to 187,980,352 and 287,373,509

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Solution

The third proportional to 187,980,352 and 287,373,509 is: 439,320,028.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,980,352 : 287,373,509 = 287,373,509 : x
  2. Step 2: Convert to fraction form
    187,980,352/287,373,509 = 287,373,509/x
  3. Step 3: Cross multiply
    187,980,352x = 287,373,509 × 287,373,509
  4. Step 4: Simplify right side
    187,980,352x = 82,583,533,674,973,088
  5. Step 5: Solve for x
    x = 82,583,533,674,973,088/187,980,352
  6. Step 6: Final answer
    x = 439,320,028.91

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.