Home / 425,498,319.99-638,441,408.30-218,382,176.40

Finding the Fourth Proportional to 425,498,319.99, 638,441,408.30 and 218,382,176.40

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Solution

The fourth proportional to 425,498,319.99, 638,441,408.30 and 218,382,176.40 is: 327,672,796.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,498,319.99 : 638,441,408.30 = 218,382,176.40 : x
  2. Step 2: Convert to fraction form
    425,498,319.99/638,441,408.30 = 218,382,176.40/x
  3. Step 3: Cross multiply
    425,498,319.99x = 638,441,408.30 × 218,382,176.40
  4. Step 4: Simplify right side
    425,498,319.99x = 139,424,224,249,884,240
  5. Step 5: Solve for x
    x = 139,424,224,249,884,240/425,498,319.99
  6. Step 6: Final answer
    x = 327,672,796.11

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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.