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Finding the Fourth Proportional to 292,312.70, 438,469.05 and 105,330.30

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Solution

The fourth proportional to 292,312.70, 438,469.05 and 105,330.30 is: 157,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,312.70 : 438,469.05 = 105,330.30 : x
  2. Step 2: Convert to fraction form
    292,312.70/438,469.05 = 105,330.30/x
  3. Step 3: Cross multiply
    292,312.70x = 438,469.05 × 105,330.30
  4. Step 4: Simplify right side
    292,312.70x = 46,184,076,577.22
  5. Step 5: Solve for x
    x = 46,184,076,577.22/292,312.70
  6. Step 6: Final answer
    x = 157,995.45

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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.