Home / 290,328,064.40-435,492,096.60-128,770,000.40

Finding the Fourth Proportional to 290,328,064.40, 435,492,096.60 and 128,770,000.40

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Solution

The fourth proportional to 290,328,064.40, 435,492,096.60 and 128,770,000.40 is: 193,155,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,328,064.40 : 435,492,096.60 = 128,770,000.40 : x
  2. Step 2: Convert to fraction form
    290,328,064.40/435,492,096.60 = 128,770,000.40/x
  3. Step 3: Cross multiply
    290,328,064.40x = 435,492,096.60 × 128,770,000.40
  4. Step 4: Simplify right side
    290,328,064.40x = 56,078,317,453,378,848
  5. Step 5: Solve for x
    x = 56,078,317,453,378,848/290,328,064.40
  6. Step 6: Final answer
    x = 193,155,000.60

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1.5x scale

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.