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Finding the Fourth Proportional to 170,937,985.80, 256,406,978.70 and 49,773,390.60

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Solution

The fourth proportional to 170,937,985.80, 256,406,978.70 and 49,773,390.60 is: 74,660,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,937,985.80 : 256,406,978.70 = 49,773,390.60 : x
  2. Step 2: Convert to fraction form
    170,937,985.80/256,406,978.70 = 49,773,390.60/x
  3. Step 3: Cross multiply
    170,937,985.80x = 256,406,978.70 × 49,773,390.60
  4. Step 4: Simplify right side
    170,937,985.80x = 12,762,244,703,400,980
  5. Step 5: Solve for x
    x = 12,762,244,703,400,980/170,937,985.80
  6. Step 6: Final answer
    x = 74,660,085.90

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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.