Finding the Fourth Proportional to 256,719,490.56, 385,041,423.36 and 84,214,533.12
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Solution
The fourth proportional to 256,719,490.56, 385,041,423.36 and 84,214,533.12 is: 126,309,395.63
Step by Step Solution
- Step 1: Write the proportion equation
256,719,490.56 : 385,041,423.36 = 84,214,533.12 : x - Step 2: Convert to fraction form
256,719,490.56/385,041,423.36 = 84,214,533.12/x - Step 3: Cross multiply
256,719,490.56x = 385,041,423.36 × 84,214,533.12 - Step 4: Simplify right side
256,719,490.56x = 32,426,083,700,122,664 - Step 5: Solve for x
x = 32,426,083,700,122,664/256,719,490.56 - Step 6: Final answer
x = 126,309,395.63
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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.