Home / 258,436,493.16-390,731,797.69

Finding the Third Proportional to 258,436,493.16 and 390,731,797.69

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Solution

The third proportional to 258,436,493.16 and 390,731,797.69 is: 590,749,920.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,436,493.16 : 390,731,797.69 = 390,731,797.69 : x
  2. Step 2: Convert to fraction form
    258,436,493.16/390,731,797.69 = 390,731,797.69/x
  3. Step 3: Cross multiply
    258,436,493.16x = 390,731,797.69 × 390,731,797.69
  4. Step 4: Simplify right side
    258,436,493.16x = 152,671,337,724,105,440
  5. Step 5: Solve for x
    x = 152,671,337,724,105,440/258,436,493.16
  6. Step 6: Final answer
    x = 590,749,920.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.