Home / 393,312,400.99-542,771,166.50-217,100,429.60

Finding the Fourth Proportional to 393,312,400.99, 542,771,166.50 and 217,100,429.60

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Solution

The fourth proportional to 393,312,400.99, 542,771,166.50 and 217,100,429.60 is: 299,598,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,312,400.99 : 542,771,166.50 = 217,100,429.60 : x
  2. Step 2: Convert to fraction form
    393,312,400.99/542,771,166.50 = 217,100,429.60/x
  3. Step 3: Cross multiply
    393,312,400.99x = 542,771,166.50 × 217,100,429.60
  4. Step 4: Simplify right side
    393,312,400.99x = 117,835,853,422,929,440
  5. Step 5: Solve for x
    x = 117,835,853,422,929,440/393,312,400.99
  6. Step 6: Final answer
    x = 299,598,622.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.