Finding the Fourth Proportional to 319,538,763.40, 478,977,470.70 and 173,664,113.80
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Solution
The fourth proportional to 319,538,763.40, 478,977,470.70 and 173,664,113.80 is: 260,316,454.55
Step by Step Solution
- Step 1: Write the proportion equation
319,538,763.40 : 478,977,470.70 = 173,664,113.80 : x - Step 2: Convert to fraction form
319,538,763.40/478,977,470.70 = 173,664,113.80/x - Step 3: Cross multiply
319,538,763.40x = 478,977,470.70 × 173,664,113.80 - Step 4: Simplify right side
319,538,763.40x = 83,181,197,979,280,976 - Step 5: Solve for x
x = 83,181,197,979,280,976/319,538,763.40 - Step 6: Final answer
x = 260,316,454.55
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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.