Home / 256,901,128.40-385,351,692.60-118,726,468.40

Finding the Fourth Proportional to 256,901,128.40, 385,351,692.60 and 118,726,468.40

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Solution

The fourth proportional to 256,901,128.40, 385,351,692.60 and 118,726,468.40 is: 178,089,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,901,128.40 : 385,351,692.60 = 118,726,468.40 : x
  2. Step 2: Convert to fraction form
    256,901,128.40/385,351,692.60 = 118,726,468.40/x
  3. Step 3: Cross multiply
    256,901,128.40x = 385,351,692.60 × 118,726,468.40
  4. Step 4: Simplify right side
    256,901,128.40x = 45,751,445,554,360,416
  5. Step 5: Solve for x
    x = 45,751,445,554,360,416/256,901,128.40
  6. Step 6: Final answer
    x = 178,089,702.60

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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.