Home / 320,495,919.12-480,743,131.17-210,525,746.40

Finding the Fourth Proportional to 320,495,919.12, 480,743,131.17 and 210,525,746.40

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Solution

The fourth proportional to 320,495,919.12, 480,743,131.17 and 210,525,746.40 is: 315,788,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,495,919.12 : 480,743,131.17 = 210,525,746.40 : x
  2. Step 2: Convert to fraction form
    320,495,919.12/480,743,131.17 = 210,525,746.40/x
  3. Step 3: Cross multiply
    320,495,919.12x = 480,743,131.17 × 210,525,746.40
  4. Step 4: Simplify right side
    320,495,919.12x = 101,208,806,516,237,360
  5. Step 5: Solve for x
    x = 101,208,806,516,237,360/320,495,919.12
  6. Step 6: Final answer
    x = 315,788,128.58

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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.