Home / 290,206,312.38-434,878,997.11-213,152,681.79

Finding the Fourth Proportional to 290,206,312.38, 434,878,997.11 and 213,152,681.79

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Solution

The fourth proportional to 290,206,312.38, 434,878,997.11 and 213,152,681.79 is: 319,412,847.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,206,312.38 : 434,878,997.11 = 213,152,681.79 : x
  2. Step 2: Convert to fraction form
    290,206,312.38/434,878,997.11 = 213,152,681.79/x
  3. Step 3: Cross multiply
    290,206,312.38x = 434,878,997.11 × 213,152,681.79
  4. Step 4: Simplify right side
    290,206,312.38x = 92,695,624,487,609,280
  5. Step 5: Solve for x
    x = 92,695,624,487,609,280/290,206,312.38
  6. Step 6: Final answer
    x = 319,412,847.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.