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Finding the Fourth Proportional to 357,258,889.60, 535,888,334.40 and 354,235,580.80

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Solution

The fourth proportional to 357,258,889.60, 535,888,334.40 and 354,235,580.80 is: 531,353,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,258,889.60 : 535,888,334.40 = 354,235,580.80 : x
  2. Step 2: Convert to fraction form
    357,258,889.60/535,888,334.40 = 354,235,580.80/x
  3. Step 3: Cross multiply
    357,258,889.60x = 535,888,334.40 × 354,235,580.80
  4. Step 4: Simplify right side
    357,258,889.60x = 189,830,715,380,128,608
  5. Step 5: Solve for x
    x = 189,830,715,380,128,608/357,258,889.60
  6. Step 6: Final answer
    x = 531,353,371.20

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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.