Home / 415,360,809.20-623,041,213.80-211,287,465.20

Finding the Fourth Proportional to 415,360,809.20, 623,041,213.80 and 211,287,465.20

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Solution

The fourth proportional to 415,360,809.20, 623,041,213.80 and 211,287,465.20 is: 316,931,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,360,809.20 : 623,041,213.80 = 211,287,465.20 : x
  2. Step 2: Convert to fraction form
    415,360,809.20/623,041,213.80 = 211,287,465.20/x
  3. Step 3: Cross multiply
    415,360,809.20x = 623,041,213.80 × 211,287,465.20
  4. Step 4: Simplify right side
    415,360,809.20x = 131,640,798,778,933,248
  5. Step 5: Solve for x
    x = 131,640,798,778,933,248/415,360,809.20
  6. Step 6: Final answer
    x = 316,931,197.80

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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.