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Finding the Fourth Proportional to 374,466.40, 561,699.60 and 290,485.60

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Solution

The fourth proportional to 374,466.40, 561,699.60 and 290,485.60 is: 435,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,466.40 : 561,699.60 = 290,485.60 : x
  2. Step 2: Convert to fraction form
    374,466.40/561,699.60 = 290,485.60/x
  3. Step 3: Cross multiply
    374,466.40x = 561,699.60 × 290,485.60
  4. Step 4: Simplify right side
    374,466.40x = 163,165,645,325.76
  5. Step 5: Solve for x
    x = 163,165,645,325.76/374,466.40
  6. Step 6: Final answer
    x = 435,728.40

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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.