Home / 402,840,020.40-604,260,030.60-211,338,913.20

Finding the Fourth Proportional to 402,840,020.40, 604,260,030.60 and 211,338,913.20

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Solution

The fourth proportional to 402,840,020.40, 604,260,030.60 and 211,338,913.20 is: 317,008,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,840,020.40 : 604,260,030.60 = 211,338,913.20 : x
  2. Step 2: Convert to fraction form
    402,840,020.40/604,260,030.60 = 211,338,913.20/x
  3. Step 3: Cross multiply
    402,840,020.40x = 604,260,030.60 × 211,338,913.20
  4. Step 4: Simplify right side
    402,840,020.40x = 127,703,658,157,202,736
  5. Step 5: Solve for x
    x = 127,703,658,157,202,736/402,840,020.40
  6. Step 6: Final answer
    x = 317,008,369.80

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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.