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Finding the Third Proportional to 292,779,169.88 and 390,328,670.25

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Solution

The third proportional to 292,779,169.88 and 390,328,670.25 is: 520,380,158.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,779,169.88 : 390,328,670.25 = 390,328,670.25 : x
  2. Step 2: Convert to fraction form
    292,779,169.88/390,328,670.25 = 390,328,670.25/x
  3. Step 3: Cross multiply
    292,779,169.88x = 390,328,670.25 × 390,328,670.25
  4. Step 4: Simplify right side
    292,779,169.88x = 152,356,470,819,133,248
  5. Step 5: Solve for x
    x = 152,356,470,819,133,248/292,779,169.88
  6. Step 6: Final answer
    x = 520,380,158.48

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.