Home / 289,490,984.34-399,500,644.44-157,331,987.70

Finding the Fourth Proportional to 289,490,984.34, 399,500,644.44 and 157,331,987.70

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Solution

The fourth proportional to 289,490,984.34, 399,500,644.44 and 157,331,987.70 is: 217,119,820.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,490,984.34 : 399,500,644.44 = 157,331,987.70 : x
  2. Step 2: Convert to fraction form
    289,490,984.34/399,500,644.44 = 157,331,987.70/x
  3. Step 3: Cross multiply
    289,490,984.34x = 399,500,644.44 × 157,331,987.70
  4. Step 4: Simplify right side
    289,490,984.34x = 62,854,230,477,176,152
  5. Step 5: Solve for x
    x = 62,854,230,477,176,152/289,490,984.34
  6. Step 6: Final answer
    x = 217,119,820.23

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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.