Home / 313,518,799.72-470,015,136.28-138,613,595.01

Finding the Fourth Proportional to 313,518,799.72, 470,015,136.28 and 138,613,595.01

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Solution

The fourth proportional to 313,518,799.72, 470,015,136.28 and 138,613,595.01 is: 207,804,086.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,518,799.72 : 470,015,136.28 = 138,613,595.01 : x
  2. Step 2: Convert to fraction form
    313,518,799.72/470,015,136.28 = 138,613,595.01/x
  3. Step 3: Cross multiply
    313,518,799.72x = 470,015,136.28 × 138,613,595.01
  4. Step 4: Simplify right side
    313,518,799.72x = 65,150,487,748,885,872
  5. Step 5: Solve for x
    x = 65,150,487,748,885,872/313,518,799.72
  6. Step 6: Final answer
    x = 207,804,086.41

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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.