Home / 354,286,890.40-531,430,335.60-217,528,823.20

Finding the Fourth Proportional to 354,286,890.40, 531,430,335.60 and 217,528,823.20

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Solution

The fourth proportional to 354,286,890.40, 531,430,335.60 and 217,528,823.20 is: 326,293,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,286,890.40 : 531,430,335.60 = 217,528,823.20 : x
  2. Step 2: Convert to fraction form
    354,286,890.40/531,430,335.60 = 217,528,823.20/x
  3. Step 3: Cross multiply
    354,286,890.40x = 531,430,335.60 × 217,528,823.20
  4. Step 4: Simplify right side
    354,286,890.40x = 115,601,415,515,849,072
  5. Step 5: Solve for x
    x = 115,601,415,515,849,072/354,286,890.40
  6. Step 6: Final answer
    x = 326,293,234.80

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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.