Home / 261,623,145.60-392,434,718.40-210,604,809.60

Finding the Fourth Proportional to 261,623,145.60, 392,434,718.40 and 210,604,809.60

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Solution

The fourth proportional to 261,623,145.60, 392,434,718.40 and 210,604,809.60 is: 315,907,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,623,145.60 : 392,434,718.40 = 210,604,809.60 : x
  2. Step 2: Convert to fraction form
    261,623,145.60/392,434,718.40 = 210,604,809.60/x
  3. Step 3: Cross multiply
    261,623,145.60x = 392,434,718.40 × 210,604,809.60
  4. Step 4: Simplify right side
    261,623,145.60x = 82,648,639,149,061,616
  5. Step 5: Solve for x
    x = 82,648,639,149,061,616/261,623,145.60
  6. Step 6: Final answer
    x = 315,907,214.40

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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.