Home / 350,208,891.20-525,313,336.80-212,256,430.40

Finding the Fourth Proportional to 350,208,891.20, 525,313,336.80 and 212,256,430.40

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Solution

The fourth proportional to 350,208,891.20, 525,313,336.80 and 212,256,430.40 is: 318,384,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,208,891.20 : 525,313,336.80 = 212,256,430.40 : x
  2. Step 2: Convert to fraction form
    350,208,891.20/525,313,336.80 = 212,256,430.40/x
  3. Step 3: Cross multiply
    350,208,891.20x = 525,313,336.80 × 212,256,430.40
  4. Step 4: Simplify right side
    350,208,891.20x = 111,501,133,710,680,960
  5. Step 5: Solve for x
    x = 111,501,133,710,680,960/350,208,891.20
  6. Step 6: Final answer
    x = 318,384,645.60

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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.