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Finding the Fourth Proportional to 291,072,405.60, 436,608,608.40 and 145,528,430.40

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Solution

The fourth proportional to 291,072,405.60, 436,608,608.40 and 145,528,430.40 is: 218,292,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,072,405.60 : 436,608,608.40 = 145,528,430.40 : x
  2. Step 2: Convert to fraction form
    291,072,405.60/436,608,608.40 = 145,528,430.40/x
  3. Step 3: Cross multiply
    291,072,405.60x = 436,608,608.40 × 145,528,430.40
  4. Step 4: Simplify right side
    291,072,405.60x = 63,538,965,479,580,256
  5. Step 5: Solve for x
    x = 63,538,965,479,580,256/291,072,405.60
  6. Step 6: Final answer
    x = 218,292,645.60

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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.