Finding the Fourth Proportional to 278,868,259.40, 418,302,389.10 and 125,813,251.40
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Solution
The fourth proportional to 278,868,259.40, 418,302,389.10 and 125,813,251.40 is: 188,719,877.10
Step by Step Solution
- Step 1: Write the proportion equation
278,868,259.40 : 418,302,389.10 = 125,813,251.40 : x - Step 2: Convert to fraction form
278,868,259.40/418,302,389.10 = 125,813,251.40/x - Step 3: Cross multiply
278,868,259.40x = 418,302,389.10 × 125,813,251.40 - Step 4: Simplify right side
278,868,259.40x = 52,627,983,641,058,928 - Step 5: Solve for x
x = 52,627,983,641,058,928/278,868,259.40 - Step 6: Final answer
x = 188,719,877.10
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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.