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Finding the Fourth Proportional to 525,701,661.60, 788,552,492.40 and 218,891,805.60

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Solution

The fourth proportional to 525,701,661.60, 788,552,492.40 and 218,891,805.60 is: 328,337,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,701,661.60 : 788,552,492.40 = 218,891,805.60 : x
  2. Step 2: Convert to fraction form
    525,701,661.60/788,552,492.40 = 218,891,805.60/x
  3. Step 3: Cross multiply
    525,701,661.60x = 788,552,492.40 × 218,891,805.60
  4. Step 4: Simplify right side
    525,701,661.60x = 172,607,678,871,816,256
  5. Step 5: Solve for x
    x = 172,607,678,871,816,256/525,701,661.60
  6. Step 6: Final answer
    x = 328,337,708.40

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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.